- Lancaster First Baptist Church (Lancaster County, S.C.)1
- Lander College1
- Landrum First Baptist Church (Spartanburg County, S.C.)1
- Lexington Rosenwald High School (Lexington, S.C.)1
- Little Bethel Baptist Church (Marion County, S.C.)1
- Lucas Avenue Baptist Church (Laurens County, S.C.)1
- MWM Company1
- Maple Baptist Church (Horry County, S.C.)1
- McColl High School1
- McGrail, John Henry1
- Medical College of South Carolina (1952-1969). Department of Medical Illustration1
- Medical Society of South Carolina1
- Mellinger Studios.1
- Merrimack Post Card Co.1
- Mount Carmel Baptist Church (Pickens County, S.C.)1
- Mullins First Baptist Church (Marion County, S.C.)1
- National Association for American Composers and Conductors1
- National Press, Inc.1
- New Hope Baptist Church (Lancaster County, S.C.)1
- New Pleasant Baptist Church (Cherokee County, S.C.)1